2156566576230 has 384 divisors, whose sum is σ = 6333840893952. Its totient is φ = 504645120000.

The previous prime is 2156566576211. The next prime is 2156566576243. The reversal of 2156566576230 is 326756656512.

2156566576230 is a `hidden beast` number, since 2 + 1 + 5 + 6 + 5 + 6 + 6 + 5 + 7 + 623 + 0 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1033332247 + ... + 1033334333.

It is an arithmetic number, because the mean of its divisors is an integer number (16494377328).

Almost surely, 2^{2156566576230} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2156566576230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3166920446976).

2156566576230 is an abundant number, since it is smaller than the sum of its proper divisors (4177274317722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2156566576230 is a wasteful number, since it uses less digits than its factorization.

2156566576230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2484 (or 2481 counting only the distinct ones).

The product of its (nonzero) digits is 13608000, while the sum is 54.

The spelling of 2156566576230 in words is "two trillion, one hundred fifty-six billion, five hundred sixty-six million, five hundred seventy-six thousand, two hundred thirty".